Device for securing a member on a cylindrical shaft



Patented Dec. 5, 1933 I a I, v

UNITED s'mrss pfrgp FFIIICEL.

J-DEVICE roe SECURING A EM ERON A" CYLINDBICAL SHAFT Jacques RobertAnger, Paris, France Application February 23, 1928, Serial. No.

256,412, and in France March 9, 1927. ReneWedMar'ch 2, 1933 3' Claims.(01. 287-52) My invention has for its object a simple and spring4,willslip; over the shaft like a catch on inexpensive device forsecuring a member, which the outside ofratchet teeth-J may be a sleeveor plate on ashaft. This device To provide operativeness in bothdirections it is constituted by a recess provided in the inner issufiicient'to provide another recess 3 contain- 5 wall of the outer partand the direction of which ing a spring 4 inclined in the oppositedirec- 0 is parallel to the common of the rotating tion. For thedirection of rotation of shaft 1 parts; a fiat spring; slightly incurvedisdiscorresponding to the arrow f the springs will posed in this recessso as to bear on one hand cause the driving; for the. reverse rotationof against one of the walls of the recess, the other shaft '1, thespring 4', on the contrary will enif) end of the spring bearing againstthe shaft. sure the. rotation of the sleeve. 65}

This latter end is moreover supported by one The recesses such as 3, 3'may have any suitedge of the recess. If the inner part is given a' ableshape. However as shown on Fig. 2, it is rotary motion in a directionsuch that it has a more advantageous to give them an incurvedouttendency to bend the suitably inclined spring, line such that if thespring bends, it may bear the spring will obviously resist and engagethe through all its surface on this curve. The re- 703 inner rotatingpart so as to drive the outer ess of the spring has for instance theshape of part. Thus the spring acts like a catch which is a portion ofcylinder the axis of which is a genoperative for only one direction ofrotation. eratrix of the inner shaft. When the spring Obviously it iseasy to provide operation in both yields it comes against the wall ofthe recess so,

Zodirections. It is sufiicient therefor to use two that it' cannotbuckle. The fibres act through 75;: Q

of the above elementary devices in which the compression and theirresistance is considersprings are disposed in opposite directions. able.I I g g The parts are thus reliably and yieldingly se- The inclinationof the spring" with referencecured together without requiring muchmachinto the tangent to the shaft at the point of contact will bepreferably nearfl5. The sliding of 0;

The invention has been illustrated by way of the spring is thenimpossible, as is also the tearexample on appended drawing wherein: 1ing offrof a metal shaving, because this shaving Fig. 1 showsdiagrammatically a cross section would not have room for clearing. ofthe keying device. Fig' 2 shows also a'recess 3" containing to- I Fig. 2illustrates a modified form. gether two flat springs each adaptedtoactfor And Fig. 3 shows diagrammatically the tool a given direction ofrotation. It may be conused for putting the spring keys in place.sidered as formed by two juxtaposed one-spring Fig. 4 is a longitudinalsection of the device recesses. Special U-s'haped springs may be usedshown in Fig. 1 the section plan being a difor acting for bothdirections of rotation,"

The shaft 1 passes through the sleeve 2 confor ordinary steels which canbe scratched by the centric therewith and is designed to drive it. Inhard steel of the spring; when however the shaft 1 the inner wall of thesleeve 2 is provided a recess is made of a particularly hard metal suchas a 3 opening inwardly and the longitudinal direcsteel alloy. it ispreferable (Fig. l) to provide in I 40 tion of which is parallel to thecommon axis of advance 1 t Shaft mallgroove 6 at the 953 the shaft 1 andof the sleeve 2. In the recess 3 iplfcejihel'e is desired 9 n t the. r nis engaged a spring 4 which is normally flat and Wlbh n which, when inposition, bears at one end against puttmg in Place OI the epr m an innerangle of the recess 3. The other end. 13 i a dlffictfn? OpemtIwHbyreaSOHof bears on shaft 1 which passes through the sleeve gg iggf i aifi i gig ggg gg gg gg fig g 109 at: rs.in?harnesses: by.

e 1 tool constituted by pincers (Fig. 3) of which one fiat Sprmg 4 1sShghtly P of the jaws '7 is recessed according to the curvev it co Wldth1S Shghtly greater than the dlstance is desired to give to the spring 4.By 'tightentw beefing edges- Thus 1f i e ing the spring between the jaws7 and s it is m the dlrectlon of the arrow f the Spring 4 W111 given thedesired curvature so as .to allow its easy engage the shaft 1 and makethe sleeve 2 rotate insertion in its recess g with it. For a reverserotation of the shaft 1 w t I claim r the sleeve 2 will not be drivenbut the end of 1. A connection comprising a cylindrical shaft, 0

ametral one passing in the middle of recess 3'. r The device describedhereinabove is sufi'lcient b; v r

a member having an opening therethrough receiving said shaft, saidmember having a recess communicating with the opening, said recesshaving angularly disposed walls, an elongated leaf spring, bowedtransversely, and disposed in the recess, and bearing at onelongitudinal edge against a wall of the recess adjacent an angle formedby the walls of the recess, saidspring bearing at its other longitudinaledge on the shaft, and having a portion intermediate the longitudinaledges thereof contacting the member at the intersection of a wall of therecess and the wall of the opening.

2. A connection comprising a cylindrical shaft, a member having anopening therethrough receiving said shaft, said member-having a recesscommunicating with the opening, said recess having angularly disposedwalls, an elongated leaf spring, bowed transversely, and disposed in therecess, and bearing at one longitudinal edge against a wall of therecess adjacent an angle formed by the walls of the recess, said springbear-ing'at its other longitudinal edge on the shaft; and having aportion intermediate the I so,

tudinal edge against a wall of the recess adjacent an angle formed bythe walls of the recess, said spring} hearing at its other longitudinaledge in the said groove in the shaft, and having a portion thereofcontacting the member at the intersection of a wall of the recess andthe wall ofthe opening. v

JACQUES ROBERT ANGER.

intermediate the longitudinal edges bowed transversely, and disposed, inthe recess, and bearing at one longi-

